René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Handle leading `//` for `posixpath.commonpath`","articleBody":"# Bug report\r\n\r\n### Bug description:\r\n\r\n```python\r\n\u003e\u003e\u003e import posixpath\r\n\u003e\u003e\u003e posixpath.commonpath([\"//foo/bar\", \"//foo/baz\"])\r\n'/foo'\r\n```\r\n\r\nExpected: `//foo` with precisely two leading slashes, see: https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap04.html#tag_04_13\r\n\r\nThis can be quite easily solved using `posixpath.splitroot`, see the PR.\r\n\r\n### CPython versions tested on:\r\n\r\nCPython main branch\r\n\r\n### Operating systems tested on:\r\n\r\nmacOS\r\n\r\n\u003c!-- gh-linked-prs --\u003e\r\n### Linked PRs\r\n* gh-117202\r\n* gh-117334\r\n\u003c!-- /gh-linked-prs --\u003e\r\n","author":{"url":"https://github.com/nineteendo","@type":"Person","name":"nineteendo"},"datePublished":"2024-03-24T20:56:48.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":18},"url":"https://github.com/117201/cpython/issues/117201"}